Case : Read the passage and answer the question(s).

A tourmaline crystal is placed such that its crystallographic axis AB is parallel to y-axis. Sunlight is made to pass through it. After the emergence of light from the tourmaline crystal, certain properties of the light are affected.

What can you say about the direct sunlight?

transverse wave

The light from the direct sunlight is a transverse wave, meaning the oscillations are perpendicular to the direction of propagation.